CN110065199A - A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP - Google Patents
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP Download PDFInfo
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- CN110065199A CN110065199A CN201910332050.2A CN201910332050A CN110065199A CN 110065199 A CN110065199 A CN 110065199A CN 201910332050 A CN201910332050 A CN 201910332050A CN 110065199 A CN110065199 A CN 110065199A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/20—Acidic compositions for etching aluminium or alloys thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/22—Light metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- ing And Chemical Polishing (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, its key points of the technical solution are that including the following steps: step 1: the aluminium alloy test specimen Jing Guo surface microscopic corrosion treatment is put into sink, it is put into ultrasonic probe and auxiliary agent in sink, generates hydrophobic membrane in aluminium alloy surface of test piece；Step 2: the aluminium alloy test specimen taking-up in step 1 is dried, is applied on the surface after microcosmic corrosion treatment and is covered with one layer of octyl trimethoxy silane, then by ultrasonic probe vibration processing 20 minutes, dried；Step 3: injection molding, the auxiliary agent n-octytriethoxysilane and octyl trimethoxy silane that are in the present invention improve pp resin to the compatibility of aluminium alloy；It is applied on the Micro porosity of aluminium alloy test specimen and is covered with one layer of octyl trimethoxy silane, in injection molding, octyl trimethoxy silane boils at high temperature, and since it has preferable associativity with PP molecule, boiling process helps to draw in PP molecule in Micro porosity.
Description
Technical field
The present invention relates to a kind of technique for sticking, more particularly to a kind of auxiliary agent configuration and aluminium alloy-PP are directly viscous
Connect technique.
Background technique
In recent years in the development of metallic composite, Al alloy composite has light-weight, the small, thermostabilization of thermal expansion
Property it is high, excellent conductive, thermally conductive the features such as make it obtain especially rapidly developing.
In order to improve the adhesive strength of aluminium alloy and other materials, it usually needs its surface is handled, it is open at present
A kind of integrated molding technology of aluminium alloy and resin combination, by the metal for needing to combine carry out base extraction, acid processing,
Ester propylhomoserin weak acid treatment, then be dried, be molded after washing with water completely.Aluminum alloy surface after processing forms countless receive
The resin in the other aperture of meter level, injection enters in these apertures, generates anchoring effect.
However, during above-mentioned, it is not high to be directly molded the probability for causing high molecular material to enter aluminium alloy hole, shape
At mechanical interlocked fewer.
Summary of the invention
It is straight in view of the deficiencies of the prior art, the present invention intends to provide a kind of configuration of auxiliary agent and aluminium alloy-PP
Technique for sticking is connect, which improves the adhesive strength between PP resin and aluminium alloy, and micro- in aluminium alloy by addition auxiliary agent
Surface after seeing corrosion treatment, which applies, is covered with one layer of octyl trimethoxy silane, and in injection molding, octyl trimethoxy silane facilitates
PP molecule is drawn in Micro porosity.
To achieve the above object, the present invention provides the following technical scheme that a kind of configuration of auxiliary agent and aluminium alloy-PP are directly viscous
Technique is connect, is included the following steps:
Step 1: there is the aluminium alloy test specimen of Micro porosity structure to be put into ultrasonic wave work nest surface, ultrasound of pouring water
Processing 10 minutes, exclude aluminium alloy surface of test piece Micro porosity in bubble, auxiliary agent is added in ultrasound works slot, the auxiliary agent with
The volume ratio of water in ultrasonic wave work nest is 1: 2~10, ultrasonic agitation, obtains the aluminium alloy test specimen that surface has hydrophobic membrane,
Step 2: taking out drying for the aluminium alloy test specimen in step 1, coats on the surface after microcosmic corrosion treatment
Then ultrasonic probe is ridden over aluminium alloy surface of test piece, vibration processing 20 minutes, handled by upper one layer of octyl trimethoxy silane
Aluminium alloy test specimen is dried afterwards.
Step 3: the Al-alloy parts in step 2 are put into mold as inserts, after PP material grain drying, are added to note
In molding machine hopper, temperature-pressure injection molding obtains the combination of PP resin and aluminium alloy.
As a further improvement of the present invention, the microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): aluminium alloy test specimen is put into lye to remove grease, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into acid solution to neutralize lye, immersion is taken out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): water is added to be configured to 500ml mixed solution for 1: 6.9~7.1 by mole mass ratio in ferric sulfate and sulfuric acid
I, is heated to 40~80 DEG C for the container for filling this mixed solution I heating, and it is molten that the aluminium alloy test specimen in step (3) is put into mixing
In liquid I, processing is taken out after twenty minutes, and aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area
Cleaning, dries after cleaning；
Step (5): water is added to be configured to 500ml mixed solution for 1: 6.6~6.8 by mole mass ratio in ferric sulfate and sulfuric acid
II, will fill the heating of this mixed solution I I container and be heated to 50~90 DEG C, and it is molten that the aluminium alloy test specimen in step (4) is put into mixing
Liquid II simultaneously will carry out vibration processing in ultrasonic probe insertion mixed solution I I, aluminium alloy test specimen is taken out in processing after five minutes, and aluminium closes
Golden surface of test piece is further corroded to form secondary Micro porosity structure, be put on the basis of forming primary Micro porosity structure
It is cleaned in ultrasonic wave Rinsing Area, it is dry after cleaning.
As a further improvement of the present invention, it is the aluminium alloy of 2A12 that aluminium alloy test specimen, which selects the trade mark, in the step (1)
Test specimen.
As a further improvement of the present invention, step (1) lye is selected as the sodium hydroxide solution that concentration is 5%；
As a further improvement of the present invention, acid solution is selected as the nitric acid solution that concentration is 5% in the step (2).
As a further improvement of the present invention, auxiliary component described in the step 1 includes n-octytriethoxysilane
With octyl trimethoxy silane, the ratio between mass fraction is 3: 5~9.
As a further improvement of the present invention, water temperature is no more than 25 DEG C in the step 1.
As a further improvement of the present invention, ultrasonic frequency is set as 1000Hz in the step 1 and step 2.
As a further improvement of the present invention, 1~2mm of thickness of octyl trimethoxy silane is coated in the step 2.
As a further improvement of the present invention, 230~250 DEG C of injection temperature in the step 3, injection pressure 80~
120Mpa, mold are molded after being preheated, and mold is pre-heated to 60~80 DEG C.
Beneficial effects of the present invention:
1, after carrying out microcosmic corrosion treatment to aluminium alloy surface of test piece in the present invention, then aluminium alloy test specimen is put into sink
In, auxiliary agent is added, the n-octytriethoxysilane and octyl trimethoxy silane that the auxiliary agent is are silane coupled at both
Under the action of agent, pp resin is improved to the compatibility of aluminium alloy, improves the adhesive strength of pp resin and aluminium alloy；
2, hydrolysis occurs for n-octytriethoxysilane and octyl trimethoxy silane and water, in the microcosmic knot of aluminium alloy
One layer of compact dense hydrophobic membrane of structure Surface Creation, so that moisture be inhibited to enter the Micro porosity of aluminum alloy surface
In, waterproof performance is good；
3, in injection molding, the octyl trimethoxy silane of aluminum alloy surface coating boils at high temperature, due to
It has preferable associativity with PP molecule, and boiling process helps to draw in PP molecule in Micro porosity, Micro porosity surface
Hydrophobic membrane can react to form organo-functional group with PP resin, PP resin and aluminium alloy can be made without bonding agent in this way
It closely combines, the state combined closely still is kept under the conditions of expanding with heat and contract with cold.
Detailed description of the invention
Fig. 1 is the schematic diagram of Al-alloy parts surface microscopic hole configurations, 1- aluminium alloy test specimen；The primary microcosmic hole in the surface 2-
Hole；The surface 3- secondary Micro porosity.
Fig. 2 is the schematic diagram that auxiliary agent and water form hydrophobic membrane in aluminum alloy surface in step 1,1- aluminium alloy test specimen；2- is helped
The mixed liquor of agent and water；3- ultrasonic wave Rinsing Area；4- ultrasonic probe.
Fig. 3 is the schematic diagram that hydrophobic membrane is formed in step 1,1- aluminium alloy test specimen；5- hydrophobic membrane.
Fig. 4 is the schematic diagram that vibration of ultrasonic wave is filled after the coating of octyl trimethoxy silane in step 2, the examination of 1- aluminium alloy
Part；4- ultrasonic probe；6- octyl trimethoxy silane overlay film.
Fig. 5 is the schematic diagram of aluminium alloy test specimen and PP injection molding in step 3,1- aluminium alloy test specimen；7-PP injection molded layers.
Specific embodiment
Embodiment one:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: the 2A12 aluminium alloy test specimen after surface microscopic corrosion treatment is put into ultrasonic wave work nest, aluminium alloy
For the original state of test specimen as shown in Figure 1, water temperature is no more than 25 DEG C, ultrasonic probe uses 1000Hz, carries out as shown in Figure 2 as follows
Operation；Ultrasonic probe frequency processing 10 minutes, the bubble in aluminium alloy surface of test piece Micro porosity is excluded, in ultrasound works slot
Middle addition auxiliary agent, the auxiliary component include n-octytriethoxysilane and octyl trimethoxy silane, mass fraction it
Than being 3: 5, the volume ratio of the water in the auxiliary agent and ultrasonic wave work nest is 1: 5, and ultrasonic probe continues according to 1000Hz frequency
Work stirring, obtain surface have hydrophobic membrane aluminium alloy test specimen, hydrophobic membrane as shown in figure 3,
Step 2: the aluminium alloy test specimen in step 1 is taken out into drying, is proceeded as follows as shown in Figure 4；By micro-
The octyl trimethoxy silane that surface coating thickness after seeing corrosion treatment is 2mm, then rides over aluminium alloy for ultrasonic probe
Surface of test piece, ultrasonic frequency are set as 1000Hz, vibration processing 20 minutes, dry aluminium alloy test specimen after processing.
Step 3: it proceeds as follows as shown in Figure 5；Al-alloy parts in step 2 are put into mold as inserts,
After PP material grain drying, it is added in injection molding machine hopper, is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, note
Injection pressure 100Mpa obtains the combination of PP resin and aluminium alloy.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is the aluminium alloy test specimen of 2A12, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
Embodiment two:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: the 2A12 aluminium alloy test specimen after surface microscopic corrosion treatment is put into ultrasonic wave work nest, aluminium alloy
For the original state of test specimen as shown in Figure 1, water temperature is no more than 25 DEG C, ultrasonic probe uses 1000Hz, carries out as shown in Figure 2 as follows
Operation；Ultrasonic probe frequency processing 10 minutes, the bubble in aluminium alloy surface of test piece Micro porosity is excluded, in ultrasound works slot
Middle addition auxiliary agent, the auxiliary component include n-octytriethoxysilane and octyl trimethoxy silane, mass fraction it
Than being 3: 7, the volume ratio of the water in the auxiliary agent and ultrasonic wave work nest is 1: 5, and ultrasonic probe continues according to 1000Hz frequency
Work stirring, obtain surface have hydrophobic membrane aluminium alloy test specimen, hydrophobic membrane as shown in figure 3,
Step 2: the aluminium alloy test specimen in step 1 is taken out into drying, is proceeded as follows as shown in Figure 4: by micro-
The octyl trimethoxy silane that surface coating thickness after seeing corrosion treatment is 2mm, then rides over aluminium alloy for ultrasonic probe
Surface of test piece, ultrasonic frequency are set as 1000Hz, vibration processing 20 minutes, dry aluminium alloy test specimen after processing.
Step 3: it proceeds as follows as shown in Figure 5: the Al-alloy parts in step 2 is put into mold as inserts,
After PP material grain drying, it is added in injection molding machine hopper, is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, note
Injection pressure 100Mpa obtains the combination of PP resin and aluminium alloy.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is the aluminium alloy test specimen of 2A12, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
Embodiment three:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: the 2A12 aluminium alloy test specimen after surface microscopic corrosion treatment is put into ultrasonic wave work nest, aluminium alloy
For the original state of test specimen as shown in Figure 1, water temperature is no more than 25 DEG C, ultrasonic probe uses 1000Hz, carries out as shown in Figure 2 as follows
Operation: ultrasonic probe frequency processing 10 minutes, the bubble in aluminium alloy surface of test piece Micro porosity is excluded, in ultrasound works slot
Middle addition auxiliary agent, the auxiliary component include n-octytriethoxysilane and octyl trimethoxy silane, mass fraction it
Than being 1: 3, the volume ratio of the water in the auxiliary agent and ultrasonic wave work nest is 1: 5, and ultrasonic probe continues according to 1000Hz frequency
Work stirring, obtain surface have hydrophobic membrane aluminium alloy test specimen, hydrophobic membrane as shown in figure 3,
Step 2: the aluminium alloy test specimen in step 1 is taken out into drying, is proceeded as follows as shown in Figure 4: by micro-
The octyl trimethoxy silane that surface coating thickness after seeing corrosion treatment is 2mm, then rides over aluminium alloy for ultrasonic probe
Surface of test piece, ultrasonic frequency are set as 1000Hz, vibration processing 20 minutes, dry aluminium alloy test specimen after processing.
Step 3: it proceeds as follows as shown in Figure 5: the Al-alloy parts in step 2 is put into mold as inserts,
After PP material grain drying, it is added in injection molding machine hopper, is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, note
Injection pressure 100Mpa obtains the combination of PP resin and aluminium alloy.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is the aluminium alloy test specimen of 2A12, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
Example IV:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: 6063 aluminium alloy test specimens after surface microscopic corrosion treatment are put into ultrasonic wave work nest, aluminium alloy
As shown in Figure 1, water temperature is no more than 25 DEG C, ultrasonic probe is carried out as follows the original state of test specimen as shown in Figure 2 using 1000Hz
Operation: ultrasonic probe frequency processing 10 minutes, the bubble in aluminium alloy surface of test piece Micro porosity is excluded, in ultrasound works slot
Middle addition auxiliary agent, the auxiliary component include n-octytriethoxysilane and octyl trimethoxy silane, mass fraction it
Than being 3: 7, the volume ratio of the water in the auxiliary agent and ultrasonic wave work nest is 1: 5, and ultrasonic probe continues according to 1000Hz frequency
Work stirring, obtain surface have hydrophobic membrane aluminium alloy test specimen, hydrophobic membrane as shown in figure 3,
Step 2: the aluminium alloy test specimen in step 1 is taken out into drying, is proceeded as follows as shown in Figure 4: by micro-
The octyl trimethoxy silane that surface coating thickness after seeing corrosion treatment is 2mm, then rides over aluminium alloy for ultrasonic probe
Surface of test piece, ultrasonic frequency are set as 1000Hz, vibration processing 20 minutes, dry aluminium alloy test specimen after processing.
Step 3: it proceeds as follows as shown in Figure 5: the Al-alloy parts in step 2 is put into mold as inserts,
After PP material grain drying, it is added in injection molding machine hopper, is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, note
Injection pressure 100Mpa obtains the combination of PP resin and aluminium alloy.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is 6063 aluminium alloy test specimen, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
Comparative example one:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: the 2A12 aluminium alloy test specimen after surface microscopic corrosion treatment is put into ultrasonic wave work nest, aluminium alloy
As shown in Figure 1, water temperature is no more than 25 DEG C, ultrasonic probe is carried out as follows the original state of test specimen as shown in Figure 2 using 1000Hz
Operation: ultrasonic probe frequency processing 10 minutes, the bubble in aluminium alloy surface of test piece Micro porosity is excluded, in ultrasound works slot
Middle addition auxiliary agent, the auxiliary component include n-octytriethoxysilane and octyl trimethoxy silane, mass fraction it
Than being 3: 7, the volume ratio of the water in the auxiliary agent and ultrasonic wave work nest is 1: 5, and ultrasonic probe continues according to 1000Hz frequency
Work stirring, obtain surface have hydrophobic membrane aluminium alloy test specimen, hydrophobic membrane as shown in figure 3,
Step 2: it proceeds as follows as shown in Figure 5: the Al-alloy parts in step 1 is put into mold as inserts,
After PP material grain drying, it is added in injection molding machine hopper, is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, note
Injection pressure 100Mpa obtains the combination of PP resin and aluminium alloy.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is the aluminium alloy test specimen of 2A12, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
Comparative example two:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: it proceeds as follows as shown in Figure 4: by the 2A12 aluminium alloy surface of test piece after microcosmic corrosion treatment
Coating thickness is the octyl trimethoxy silane of 2mm, then the original state of aluminium alloy test specimen is as shown in Figure 1, visit ultrasonic wave
Head rides over aluminium alloy surface of test piece, and ultrasonic frequency is set as 1000Hz, and vibration processing 20 minutes, by aluminium alloy test specimen after processing
It dries.
Step 2: it proceeds as follows as shown in Figure 5: the Al-alloy parts in step 1 is put into mold as inserts,
After PP material grain drying, it is added in injection molding machine hopper, is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, note
Injection pressure 100Mpa obtains the combination of PP resin and aluminium alloy.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is the aluminium alloy test specimen of 2A12, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
Comparative example three:
A kind of configuration of auxiliary agent and the direct technique for sticking of aluminium alloy-PP, include the following steps:
Step 1: the 2A12 Al-alloy parts Jing Guo surface microscopic corrosion treatment are put into mold as inserts, aluminium alloy
The original state of test specimen as shown in Figure 1, proceed as follows as shown in Figure 5: after PP material grain drying, being added to injection molding machine hopper
In, it is molded after mold is pre-heated to 70 DEG C, 240 DEG C of injection molding temperature, injection pressure 100Mpa obtains PP resin and aluminium alloy
Combination.
The microcosmic etch step of aluminum alloy surface is as follows in the step 1:
Step (1): taking the trade mark is the aluminium alloy test specimen of 2A12, and aluminium alloy test specimen is put into the sodium hydroxide that concentration is 5%
To remove grease in solution, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into the nitric acid solution that concentration is 5% leaching to neutralize lye
Bubble takes out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): add water to be configured to 500ml mixed solution I for 1: 7 by mole mass ratio in ferric sulfate and sulfuric acid, will contain
There is the container heating of this mixed solution I to be heated to 60 DEG C, the aluminium alloy test specimen in step (3) is put into mixed solution I, is handled
It takes out after twenty minutes, aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area and cleans, has cleaned
It is dried after finishing；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.7, will
It fills the heating of this mixed solution I I container and is heated to 70 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution I I and is incited somebody to action
Vibration processing is carried out in ultrasonic probe insertion mixed solution I I, ultrasonic frequency is set as 1000Hz, and processing is taken out after five minutes
Aluminium alloy test specimen, aluminium alloy surface of test piece on the basis of forming primary Micro porosity structure, further corrode to be formed it is secondary micro-
Hole configurations is seen, is put into ultrasonic wave Rinsing Area and cleans, it is dry after cleaning.
One, stretching experiment
Identical two samples of size are respectively prepared in embodiment one to two and combination obtained in comparative example one to two,
And stretching experiment is carried out respectively to the two samples.With the length and width of gage measuring aluminium alloy test specimen and the resin bonding face pp
Degree, is accurate to 0.05mm, sample is fixed in the upper and lower clamper of tensile testing machine, makes the load of application and indulging for sample
Consistent to thrust load direction, starting testing machine loads clamper to sample with the speed of (50 ± 5) mm/min, until aluminium alloy
Maximum load bonding with pp resin to destroy completely, that record sample destroys.
Aluminium alloy test specimen and the tensile shear strength of pp resin are calculated as follows:
In formula: τ --- aluminium alloy test specimen and pp resin bonded tensile shear strength, MPa；
P --- the maximum load of sample failure by shear, N；
ω --- sample adhesive surface length, mm；
L --- sample adhesive surface width, mm.
1 tensile shear strength of table
| Tensile shear strength (MPa) | |
| Embodiment one | 25.3 |
| Embodiment two | 27.1 |
| Embodiment three | 22.4 |
| Example IV | 24.8 |
| Comparative example one | 18.6 |
| Comparative example two | 17.3 |
| Comparative example three | 16.4 |
Microcosmic corrosion treatment is first carried out to aluminium alloy surface of test piece in the present invention, first the sodium hydroxide of concentration 5% is selected to go
Except aluminium alloy test specimen is attached on the grease on surface in processing, then with concentration be 5% nitric acid solution in extra hydroxide
Sodium, after finally using clear water clean dry, aluminium alloy test specimen to pre-process, the ferric sulfate and sulfuric acid of configuration higher concentration first
Aluminium alloy reagent is put into mixed liquor I by mixed liquor I under 60 DEG C of baking oven of reaction temperature, and sulfuric acid closes aluminium in mixed liquor I
Golden surface of test piece is corroded, meanwhile, ferric sulfate carries out displacement with the aluminium in aluminium alloy and reacts, under the comprehensive function of the two,
Aluminium alloy surface of test piece forms primary Micro porosity structure, cleans up test specimen after handling 20min, is reconfigured the sulphur of low concentration
Exemplar is put into mixed liquor I I by the mixed liquor I I of sour iron and sulfuric acid under 70 DEG C of baking oven of reaction temperature, and utilizes 1000Hz
The shock effect of ultrasonic wave expels the bubble in primary Micro porosity, reacts hole inner surface sufficiently with mixed liquor I I,
It is formed on the basis of primary Micro porosity structure, secondary Micro porosity structure is further formed, after microcosmic corrosion treatment
Aluminium alloy is good with pp resin-bonded effect in subsequent injection molding.
Aluminium alloy test specimen after microcosmic corrosion treatment is put into sink, auxiliary agent, the n-octyl three that the auxiliary agent is are added
Ethoxysilane and octyl trimethoxy silane, n-octytriethoxysilane have affinity, octyl three to aluminum metal atom
Methoxy silane has preferable affinity to pp resin, under the action of both silane coupling agents, improves pp resin to aluminium
The compatibility of alloy further improves the adhesive strength of pp resin and aluminium alloy；In addition, n-octytriethoxysilane and pungent
Hydrolysis occurs for base trimethoxy silane and water, forms hydroxyl silanol and is filled into Al-alloy parts surface microscopic hole, alcohol
Mutual cross-linking reaction can generate one layer of compact dense hydrophobic membrane in aluminium alloy microstructural surfaces between hydroxyl, thus
Moisture is inhibited to enter in the Micro porosity of aluminum alloy surface, waterproof performance is good.
After auxiliary agent hydrolysis is complete, aluminum alloy surface is dried, painting is covered with one layer of octyl trimethoxy silane, in ultrasonic wave
Under the action of probe, drive away the bubble in Micro porosity, so that octyl trimethoxy silane is filled into Micro porosity, PP note
When being mapped to mold cavity, there is good mobility, the octyl trimethoxy silane in Al-alloy parts surface hole defect is at high temperature
It boils, since it has preferable associativity with PP molecule, boiling process helps to draw in PP molecule in Micro porosity.
The hydrophobic membrane on Micro porosity surface can react to form organo-functional group with PP resin, can make PP without bonding agent in this way
Resin is closely combined with aluminium alloy, and the state combined closely still is kept under the conditions of expanding with heat and contract with cold.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of auxiliary agent configuration and the direct technique for sticking of aluminium alloy-PP, characterized by the following steps:
Step 1: there is the aluminium alloy test specimen of Micro porosity structure to be put into ultrasonic wave work nest surface, ultrasonic treatment of pouring water
10 minutes, the bubble in aluminium alloy surface of test piece Micro porosity is excluded, auxiliary agent is added in ultrasound works slot, the auxiliary agent and ultrasound
The volume ratio of water in wave work nest is 1: 2~10, ultrasonic agitation, obtains the aluminium alloy test specimen that surface has hydrophobic membrane,
Step 2: the aluminium alloy test specimen in step 1 is taken out into drying, is applied on the surface after microcosmic corrosion treatment and is covered with one
Then ultrasonic probe is ridden over aluminium alloy surface of test piece by layer octyl trimethoxy silane, vibration processing 20 minutes, will after processing
Aluminium alloy test specimen is dried.
Step 3: the Al-alloy parts in step 2 are put into mold as inserts, after PP material grain drying, are added to injection molding machine
In hopper, temperature-pressure injection molding obtains the combination of PP resin and aluminium alloy.
2. a kind of auxiliary agent configuration according to claim 1 and the direct technique for sticking of aluminium alloy-PP, it is characterised in that: described
The microcosmic etch step of aluminum alloy surface is as follows in step 1:
Step (1): aluminium alloy test specimen is put into lye to remove grease, immersion is taken out after ten minutes；
Step (2): the aluminium alloy test specimen in step (1) is put into acid solution to neutralize lye, immersion is taken out after five minutes；
Step (3): by the aluminium alloy test specimen clear water cleaning, drying in step (2)；
Step (4): adding water to be configured to 500ml mixed solution I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.9~7.1, will
The container heating for filling this mixed solution I is heated to 40~80 DEG C, and the aluminium alloy test specimen in step (3) is put into mixed solution I
In, processing is taken out after twenty minutes, and aluminium alloy surface of test piece forms primary Micro porosity structure, is put into ultrasonic wave Rinsing Area clear
It washes, is dried after cleaning；
Step (5): adding water to be configured to 500ml mixed solution I I in ferric sulfate and sulfuric acid by mole mass ratio for 1: 6.6~6.8,
The heating of this mixed solution I I container will be filled and be heated to 50~90 DEG C, the aluminium alloy test specimen in step (4) is put into mixed solution
II simultaneously will carry out vibration processing in ultrasonic probe insertion mixed solution I I, aluminium alloy test specimen be taken out after processing 5 minutes, aluminium closes
Golden surface of test piece is further corroded to form secondary Micro porosity structure, be put on the basis of forming primary Micro porosity structure
It is cleaned in ultrasonic wave Rinsing Area, it is dry after cleaning.
3. a kind of aluminum alloy surface microstructure preparation process according to claim 2, it is characterised in that: the step
(1) it is the aluminium alloy test specimen of 2A12 that aluminium alloy test specimen, which selects the trade mark, in.
4. a kind of aluminum alloy surface microstructure preparation process according to claim 2, it is characterised in that: the step
(1) lye is selected as the sodium hydroxide solution that concentration is 5%.
5. a kind of aluminum alloy surface microstructure preparation process according to claim 2, it is characterised in that: the step
(2) acid solution is selected as the nitric acid solution that concentration is 5% in.
6. a kind of auxiliary agent configuration according to claim 1 and the direct technique for sticking of aluminium alloy-PP, it is characterised in that: described
Auxiliary component described in step 1 includes n-octytriethoxysilane and octyl trimethoxy silane, and the ratio between mass fraction is
3: 5~9.
7. a kind of auxiliary agent configuration according to claim 1 and the direct technique for sticking of aluminium alloy-PP, it is characterised in that: described
Water temperature is no more than 25 DEG C in step 1.
8. a kind of auxiliary agent configuration according to claim 1 and the direct technique for sticking of aluminium alloy-PP, it is characterised in that: described
Ultrasonic frequency is set as 1000Hz in step 1 and step 2.
9. a kind of auxiliary agent configuration according to claim 1 and the direct technique for sticking of aluminium alloy-PP, it is characterised in that: described
1~2mm of thickness of octyl trimethoxy silane is coated in step 2.
10. a kind of auxiliary agent configuration according to claim 1 and the direct technique for sticking of aluminium alloy-PP, it is characterised in that: described
230~250 DEG C of injection temperature in step 3,80~120Mpa of injection pressure, mold are molded after being preheated, by mold
It is pre-heated to 60~80 DEG C.
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